Engineer - Core Network Operations.Technology

Education

• B.Sc. in Electrical/ Electronic or Telecommunications Engineering

Work Experience

• At least 5 years’ work experience in Core CS&PS Network
• Experience in troubleshooting TCP/IP with protocol analyzers, Wireshark
• Proven experience in Core CS&PS Network operations
• Experience in the ZTE, Huawei and Ericsson Core equipment portfolio will be desirable.

Training/Certification

• ZTE ZXUN EPC/PCRF/NCEE/DRA Product Operation and Maintenance
• NFV(TCES)） Intermediate Training
• ZTE ZXUN CS&USPP/VoLTE/RCP/ Product Basic Operation and Maintenance
• GSM/WCDMA MSC/MSC-S R13.2 Configuration (ERICSSON)
• Ericsson Centralized User Database (CUDB) 13B Operation and Service Configuration
• GSM System Survey and GPRS System Survey
• ISO 9001: 2015 Quality Management System-Requirements
• ITIL V3 frameworks
• Fluency in English and French
• Telecommunications industry experience
• Global mindset to service worldwide operations
• Any other relevant

Knowledge

• Understanding of 3GPP, ITU-T and ANSI standards.
• Circuit and Packet switched communications protocols such as SS7 (including SCCP, TCAP, MAP and CAMEL phases 1 to 4), SCTP (SIGTRAN), Diameter, including ability to design and configure voice, data and messaging flows.
• Voice SIP / RTP, ISUP and voice convergence technologies, including IMS (including VoLTE and VoWiFi).
• Online Charging System (OCS) and CAMEL in billing and call control
• Core Network virtualization and cloudification

Skills

• Basic understanding of telecom network key technology is preferred
• Familiar to 3GPP, ITU-T Standard and Core network and flow is preferred.
• Voice SIP / RTP, ISUP and voice convergence technologies, including IMS (including VoLTE and VoWiFi)
• Hands on with sniffers, Wireshark and testing tools advanced mode
• Experience with mobile networks(2G/3G/4G/5G), international signaling, and international interconnects a strong plus
• Extensive experience with complex signaling interop within the next generation intelligent networks
• Problem Solver
• Quality and efficiency minded, analytical thinking
• Quick learner, willing to take challenge, thriving in fast paced, high-pressure environment
• Strong writing and documentation skills are needed to develop reports
• Flexible, showing initiative, perseverance and have good communication & co-operation skills, strong teamwork
• Pro-active, customer-oriented with good customer communications
• Adaptability and responding to change
• Results Achiever
• Operationally Astute
• Be able to work under pressure
• Creativity, flexibility and adaptability
• Relationship skills
• Team working, inter-personal skills
• Self-motivated and Decisive

Behavioral Qualities

• Decisive Problem Solver
• Detail-oriented
• Highly organized

Accountable for developing and implementing processes and procedures to integrate new nodes, links and services in the Core network of MTN Cameroon.

Responsible for the implementation of all core systems, change requests, testing and reviewing performance before and after every change completion.

Responsible for the review of all Core systems’ statistical performance daily with reports shared accordingly.

Responsible for supporting local teams & providing guidance on troubleshooting of general & specific network faults

Management and coordination of the activities and performance for all 3rd party vendors delivering specific core services for MTN Cameroon such as GTP, SS7 and SMS firewall.

Responsible for building the necessary communication requirements among different departments: IN, Billing, Planning & IS teams, etc...

Responsible for handling all UAT/PAT testing with project implementors and/or other departments during project acceptance.

Ensure all UAT/PAT issues are resolved and documented.

Responsible for the resolution of all vulnerabilities on the Core systems.

Provide other departments with technical core systems information upon request

Responsible for the scheduling of Disaster Recovery Plan activities and documentation thereof in line with MTN Cameroon’s business continuity plan.

Responsible for the coordination of vendor service requests per the agreed SLAs

Audit of core systems configurations to ensure homogeneity in pooled systems.

Promote the use of intelligent tools for Core network service analytics to enhance operational excellence.

Participate in core network (Circuit Switch, Packet Switch) area trouble shooting, remote / on-site support and emergency recovery activities.

Provide guidance to both planning and project teams in the adoption and implementation of core network solutions.

Ability to schedule regular reporting sessions with Managed service partners and 3rd parties and report to upper management on core systems performance.

Ensure all Core systems backups are up to date in compliance with BCP guidelines.

Support internal and external audit engagements pertaining to core network systems.

Involve in the System / Function Verification, trial project and support activities.

Provide technical support in the core network (Circuit Switch, Packet Switch) area towards Marketing Unit, Customer service, and other departments.

Perform new product lab test, customer environment qualification and integration

maintenance of effective PS and CS network elements and implementation of network requirements and specifications to support business strategic, services and products

Perform a full system test daily as required by circumstances.

Supervision and troubleshooting of core network problems as they arise and ensure it stays fully operational.

Developing and maintaining the knowledge base for networking technologies.

Procedures and providing consulting support to project team as the need arises.

Carry out installations, preventive maintenance and troubleshooting on nodes (MSC, MSS, MSC-S Blades, STP, DRA/DEA, SGSN-MME, GGSN/EPG, PCRF, PCEF, MGW, SBG HLR-FE, HSS-FE, EIR-FE, CUDB, IMS, vSBG, DNS.

Manage stakeholder relationships with other Telcos and partners in the set up and operation of shared mobile services

Manage performance of MS (Managed Service) partners and 3rd party vendors in delivering world class core systems’ performance

Performing software upgrade in Core nodes (PNF&VNF&CNF)

Managing and coordinating roaming configurations and routine tests

Prepare reports daily, weekly, and monthly reports for engineers, Management and Group